I have tried 3 different laptops, the com port is being recognized properly on all of them. I havent had another tactrix cable to try yet, so that could still be an issue.

The symptoms prior to the issue was that it only partially read the data for Learning View before crashing (i.e. it would communicate fine, then upon another query, it would only partially readback the data for learning view, then no connection after that whatsoever).